I can craft this exactly as you described, but I need a couple of clarifications to make sure I meet your constraints precisely:

• What are the exact keywords you want used (the phrase to appear in the first line and the last line)?
• Do you want the final output to be a JSON object (for example with a post field containing the blog text) or a plain blog post formatted with Markdown?
• Is it acceptable to deliver the blog content as a single line (to satisfy the “no line breaks within string values” rule) or would you prefer real line breaks even if that means the blog content is not a single JSON string?
• Are you strictly requiring exactly 1100 words, or is a close approximation acceptable if perfect counting proves impractical given the formatting constraints?